Hi there. I just bought an used lefthand MK standard. It sounds amazing but I can not balance it. What do I do wrong?

Hi Oivind, welcome and congrats.  Many of the members here who have long scale basses with standard point bodies just use a wide strap to keep the neck from diving.  Perhaps if some of the guys see this thread they will make some recommendations.

Yes, a wide suede-bottomed strap will solve most of your problems. A member here who plays Small Standards pretty much exclusively (a design noted for its' diving neck) has a technique of applying downward pressure from his plucking-hand forearm to the body's upper bout. I've found this to be pretty effective in controlling dive and non-intrusive to my technique.

Oivind, Great to have another Lefty in the Club!I think I am turning into the unofficial Lefty greeter. The first thing you need to know is Please post pictures. There,I said it first!
Mike

Hi again
 
Thanks for all the help. I found out that if I wear the bass like Mark King (under the armpit) it almost balances. I forgot to mention! The bass has a Omega cut. I will post pictures as soon as possible.

Welcome and greetings from a fellow lefty!  We have a good number of us in the club now.  
A lefty Mark King? Wow, I wish I had found that!
Like Mike said, Pictures please! I too owe  pictures of my Orion, a good project for this weekend.  Welcome Ladyboy.

Greetings and welcome ladyboy,
  This has to be the best posting board for bass tech and talk.I'm looking forward to seeing  some pics. I love the look of the Omega cut...congrats
on your new baby.
Kris